JPH1168339A - Frame structure of electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively utilize a space of an electronic apparatus by a method wherein the open side of a base frame is covered with a front plate when an electronic unit is housed in the base frame. SOLUTION: A base frame 2 is provided with an open side 12 which corresponds to one of sides which form the outer case of an electronic apparatus, and an electronic unit 1 is provided with a front plate 11 which covers the open side 12 of the base frame 2. Furthermore, the electronic unit 1 comprises a support member which arranged a printed circuit board 13 along the inner side walls of the base frame 2 and controls the position of the printed circuit board 13 bearing against the other side of the base frame 2 and a guide part which is formed in one piece with the inner walls of the base frame 2. By this setup, the base frame 2 can dispense with a space which is usually provided in both a lateral and a horizontal direction other than a space for the electronic unit 1, so that no dead space is formed, and the space of an electronic apparatus can be effectively utilized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic unit having a printed circuit board and a connector for electrically connecting an external device, a base frame having a predetermined space for accommodating the electronic unit, and an upper surface of the electronic device. The present invention relates to a frame structure of an electronic device including an upper cover to be formed.

[0002]

2. Description of the Related Art In an electronic apparatus such as an information processing apparatus, a housing is constituted by a frame formed of a sheet metal or a synthetic resin, and an electronic unit constituted by internal parts including a printed circuit board is mounted on the frame. I have. In addition, the electronic unit is provided with a connector portion for electrically connecting to an external device at one end of the printed circuit board. This connector is attached to a front plate made of sheet metal from the viewpoint of radio waves, static electricity, maintainability, and the like.

FIG. 6 is an exploded perspective view of the prior art. In the figure, the housing of the electronic device includes a base frame 52 formed in a box shape and an upper cover 53 formed in a plate shape, and an insertion hole 62 is formed on one surface of the base frame 52. The electronic unit 51 is configured to be mounted on a housing by being inserted into the insertion hole 62. The electronic unit 51 includes an internal component (not shown), a printed circuit board 63, and a front panel 61 that covers the above-described insertion hole 62 and has a connector (not shown) that is electrically connected to an external device.

FIG. 7 shows an explanatory diagram of the prior art. FIG. 1 shows an electronic device such as a POS terminal. In FIG. 6A, for example, RS
232C, Centro, CRT, KB, mouse, drawer,
A large number of connectors 72 for electrical connection with various input / output devices such as customer displays and PCMCIA, communication devices, and the like are arranged.

In FIG. 1B, an electronic unit 51 includes a front plate 61 on which the above-described connectors 72 are arranged, a printed circuit board 63 on which the above-described connectors 72 are arranged in two stages, and a printed circuit board 63 on one side. It is composed of a floppy disk (FPD) disposed on a circuit board 63 and a power supply.
It is fixed to 2.

In FIG. 1C, when the electronic unit 51 is mounted on the base frame 52, the above-described insertion hole 62 is used.
Then, the printed circuit board 63 is inserted into a guide portion 65 formed on the base frame 52 to be mounted at a predetermined position.

In recent years, electronic devices have been improved in performance and miniaturization, and elements mounted on the printed circuit board 63, connectors for internal connection, and the like can be mounted at high density. On the other hand, a large number of connectors 72 electrically connected to the above-described various input / output devices, communication devices, and the like arranged on the front plate 61 include:
It is necessary to use a connector of a standardized standard, and a large-sized connector will be employed. Accordingly, the area for disposing the above-described connector 72 group increases, and the front plate 61 and the printed circuit board 63 tend to be large.

[0008]

As described above, the prior art has the following problems.

1) Since the electronic unit is inserted into the insertion hole formed in the base frame, a space is formed in the horizontal direction and the vertical direction of the base frame, thereby increasing the size of the electronic device.

2) Since the guide portion and the like are formed as separate parts, the number of parts increases, and the manufacture and assembly become complicated.

[0011]

In order to solve the above problems, the present invention takes the following measures.

A front panel of an electronic unit mounted inside the electronic device is configured as a part of a base frame forming an outer casing of the electronic device. That is, an open surface corresponding to one surface forming the outer casing of the electronic device is formed in the base frame, and the open surface of the base frame is covered by the front plate when the electronic unit is stored in the base frame.

By taking the above measures, the front plate of the electronic unit is formed as one surface forming the outer casing of the electronic device. Thus, the base frame does not need to provide a special storage space other than the volume of the electronic unit.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention adopts the following embodiments.

As shown in FIG. 1, an electronic unit having a printed circuit board and a connector portion for electrically connecting an external device connected to the printed circuit board, a base frame having a predetermined space for accommodating the electronic unit, and In the frame structure of an electronic device including an upper cover forming the upper surface of the electronic device, the base frame 2 has an open surface 12 corresponding to one surface forming an outer casing of the electronic device, and the electronic unit 1 has a base frame. 2 is provided with a front plate 11 that covers the open surface 12 of the base frame 2 when stored in the base frame 2.

Further, as shown in FIG. 3A, the electronic unit 1 has the printed circuit board 13 arranged along the inner wall of the base frame 2 and
It is preferable to provide a support member 14 that abuts on the other surface to regulate the position of the printed circuit board 13.

Further, as shown in FIG. 3B, the base frame 2 is a printed circuit board 1 of the electronic unit 1.
It is preferable that the guide portion 15 for regulating the position of the third member be formed integrally with the inner wall.

Further, as shown in FIGS. 4 and 5, the pressure contact portion 16 is provided at the contact portion between the front plate 11 and the base frame 2.
It is preferable to provide

By employing the above-described embodiment, the following operation works.

In the embodiment shown in FIG. 1, when the electronic unit is housed in the base frame, the front plate is constituted as one component forming the base frame. Thus, when the electronic unit is stored in the base frame, it is not necessary to provide a space in the horizontal and vertical directions other than the electronic unit. Therefore, no dead space is generated, and the space of the electronic device is effectively used.

Further, in the embodiment shown in FIG. 3A, the electronic unit can be easily removed upward from the base frame.

Further, in the embodiment shown in FIG. 3B, when removing the electronic unit from the base frame, the electronic unit can be removed after sliding.

Further, in the embodiment shown in FIGS. 4 and 5, the press contact portion is formed by a resilient projection piece having a projection or a zigzag resilient projection piece, so that the frame ground connection between the electronic unit and the base frame is achieved. Becomes possible.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A typical embodiment according to the present invention will be described with reference to FIGS. In the following, the same portions are denoted by the same reference numerals, and detailed description may be omitted.

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

Referring to FIG. 1, the frame structure of the electronic apparatus includes an electronic unit 1 having a printed circuit board 13, a connector (not shown) for electrically connecting an external device connected to the printed circuit board, and internal components; And a base frame 2 having a predetermined space for accommodating the electronic device, and an upper cover 3 forming an upper surface of the electronic device.

The base frame 2 has an open surface 12 corresponding to one surface forming an outer casing of the electronic device, for example, at a rear portion. The electronic unit 1 includes a front plate 11 that covers the open surface 12 of the base frame 2 when housed in the base frame 2, and is configured to be mounted from the open surface 12 side or the upper surface side of the base frame 2.

FIG. 2 is an explanatory view of an embodiment of the present invention (part 1).
It is.

FIG. 1 shows an electronic device such as a POS terminal. In FIG. 7A, FIG.
As in (a), for example, RS232C,
A large number of connectors 22 that electrically connect to various input / output devices such as a centro, a CRT, a KB, a mouse, a drawer, a customer display, and a PCMCIA, and a communication device are arranged.

In FIG. 7B, the electronic unit 1 is connected to the front plate 11 on which the above-mentioned connectors 22 are arranged and the above-mentioned connectors 22 which are arranged in two stages by soldering, as in FIG. 7A. Printed circuit board 13 and a floppy disk (FP) disposed on one printed circuit board 13
D) and a power supply, and are fixed from the side of the base frame 2 by, for example, fixing screws 21.

In this configuration, when the electronic unit 1 is housed in the base frame 2, the front plate 11 covers the open surface 12 of the base frame 2 to form a frame of the electronic device. Further, when the electronic unit 1 is stored in the base frame 2, the base frame 2 does not need to provide a space in the horizontal direction and the vertical direction other than the storage space for the electronic unit 1.

FIG. 3 is an explanatory view of an embodiment of the present invention (part 2).
It is.

In FIG. 2A, the electronic unit 1 is
The printed circuit board 13 is disposed along the inner side wall of the base frame 2 and has a support member 14 that contacts the bottom surface of the base frame 2 and regulates the position of the printed circuit board 13 in the vertical direction. In this configuration, the electronic unit 1 can be mounted or removed from above the base frame 2.

In FIG. 3B, the base frame 2
Has a guide portion 15 for regulating the position of the printed circuit board 13 of the electronic unit 1 integrally formed on the inner wall.
Note that the guide portion 15 may be partially formed, and further, the guide portion 15 may be formed so as to hold the leading end of the printed circuit board 13 when the electronic unit 1 is mounted on the base frame 2. Is preferred.

FIG. 3C shows a mode in which the electronic unit 1 is mounted on the base frame 2. The upper cover 3
Is omitted. In the figure, the electronic unit 1 has a front plate 11 on which the above-mentioned connector 22 group is arranged, and a printed circuit board 13 on which the above-mentioned connector 22 group arranged in two stages is soldered. A floppy disk (FPD) is arranged on one printed circuit board 13, a hard disk (HDD) is arranged on the other printed circuit board 13, and the printed circuit boards 13 are connected by a stacking connector or the like. I have.

The front plate 11 is brought into contact with the bottom of the base frame 2 so that the electronic unit 1
When the electronic unit 1 is mounted on the base frame 2,
The upper and lower positions are regulated. In FIGS. 1 and 3, the electronic device has been described as being placed horizontally, but is not limited to being placed horizontally, and may be placed vertically.

FIG. 4 is an explanatory view of an embodiment of the present invention (part 3).
It is.

Referring to FIG. 3, an embodiment in which a press contact portion 16 is provided at a contact portion between the front plate 11 and the base frame 2 will be described. As shown in FIG. 1A, the base frame 2 has a plurality of convex projections 23,
Are pressed against each other. It is preferable that the end of the base frame 2 is formed in a comb shape as shown in FIG. 2B, so that each projection 23 has an elastic force so as to contact the front plate 11.

FIG. 5 is an explanatory view of an embodiment of the present invention (part 4).
It is.

Another embodiment will be described with reference to FIG. An end portion of the base frame 2 is formed in a substantially U-shape so as to sandwich the front plate 11, and a plurality of projecting protrusions 23 are formed on the upper and lower pieces. The front plate 11 is inserted between the protrusions 23 to form the press contact portion 16.

4 and 5, the frame ground connection between the electronic unit 1 and the base frame 2 becomes possible.

[0042]

As described above, according to the present invention, the following effects can be obtained.

An electronic unit having a printed circuit board and a connector portion for electrically connecting an external device connected to the printed circuit board, a base frame having a predetermined space for accommodating the electronic unit, and an upper surface of the electronic device are formed. In the frame structure of an electronic device configured with an upper cover, an open surface corresponding to one surface forming an outer casing of the electronic device is formed on the base frame, and the electronic unit is opened when the electronic unit is stored in the base frame. A front plate that covers the front panel. Further, a pressure contact portion is provided at a contact portion between the front plate and the base frame.

Thus, when the electronic unit is housed in the base frame, the front plate can be configured as one component forming the base frame. That is, when the electronic unit is stored in the base frame, it is not necessary to provide a space in the horizontal and vertical directions other than the storage space for the electronic unit. Therefore, the size of the electronic device can be reduced by effectively utilizing the space of the electronic device. Further, the maintainability can be improved and the number of parts can be reduced. Further, frame ground connection is easy, measures against radio waves and static electricity can be easily made, and the reliability of the electronic device can be improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is an explanatory view (No. 1) of the embodiment of the present invention.

FIG. 3 is an explanatory view (part 2) of the embodiment of the present invention.

FIG. 4 is an explanatory diagram (No. 3) of the embodiment of the present invention.

FIG. 5 is an explanatory diagram (No. 4) of the embodiment of the present invention.

FIG. 6 is an exploded perspective view of a conventional technique.

FIG. 7 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 1: Electronic unit 2: Base frame 11: Front plate 12: Open surface 13: Printed circuit board 14: Support member 15: Guide part 16: Pressure contact part

Claims (4)

[Claims] An electronic unit having a printed circuit board and a connector portion for electrically connecting an external device connected to the printed circuit board, a base frame having a predetermined space for accommodating the electronic unit, and an upper surface of the electronic device In the frame structure of an electronic device comprising an upper cover forming an electronic device, an open surface (12) corresponding to one surface forming an outer casing of the electronic device is formed on the base frame (2), and the electronic unit (1) is formed on the base. A frame structure for an electronic device, comprising: a front plate (11) that covers an open surface (12) of a base frame (2) when housed in a frame (2). The electronic unit (1) has a printed circuit board (13) arranged along the inner wall of the base frame (2) and a printed circuit board abutting on another surface of the base frame (2). The frame structure of an electronic device according to claim 1, further comprising a support member (14) for regulating a position of the plate (13). 3. The base frame (2) has a guide portion (15) for defining the position of a printed circuit board (13) of the electronic unit (1) integrally formed on an inner wall thereof. Item 3. A frame structure of the electronic device according to Item 1. 4. The frame structure for an electronic device according to claim 1, further comprising a press contact portion at a contact portion between the front plate and the base frame.